Improvement in brick-kilns



UNITED STATES PATENT EDWIN RAY MCDOUGAL, OF INDIANAPOLIS, INDIANA.

IMPROVEMENT'IN BRICK-KILNS.

nEEIGE. N

Specification forming part of Letters Patent No. 190,060, dated April 24, 1877; application filed October 18, 1876. I

To all whom it may concern:

Be it known that i, Enwm a. MGDOUGAL,

of Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Brick-Kilns; and I do hereby declare that the following' is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and

to letters of reference marked-thereon, which form a part of this specification.

Figurel is a front elevation of my improved brick-machine 5 Fig. 2, a horizontal section taken in the plane .fr a: of Fig. 1.

Like letters in both figures of the drawing indicate like parts.

The object of this invention is to use coal or coke in addition to wood, so as to increase Y the heat, and thus save time in the burning of brick, as will be hereinafter more fully eX- plained.

The brick-kiln is built, as ordinarily, with arches A, and surrounded by a casing-wall, B,

having the usual fire dues or openings G U made in the casing at the ends of the arches. These openings are provided with the usual doors having shutters, but, not having any direct bearing upon lthe invention, it was not deemed necessary to show them in the drawing. D D are peep-holes, to enable the brickmaker to see how his fires are burning within the kiln. The kiln as thus described represents a kiln for the use of wood only in the lues uniting with the currents of air through the fire-dues will produce an increased draft. These furnaces will be placed on both sides of the kiln and between every two lire-openings; consequently they will be exactlyopposite each other.

The advantages derived from placing the furnace between the fire-flues C C is that the brick-maker can use either coal orwood, or

both at the same time, at his opt-ion, so that t means the heat can be forced against the wall h wherever it may be required, it only being necessary to use the doors of the fire-dues when it is found that the kiln is not heating equally in all parts thereof, or when Vthe furnaces should happen to get out of order.

Having thus fully described my invention, what I claim therein as new, and desire to secure by Letters Patent, is-

'Ihe fire openings or flues U C, in combina-` tion with the -flues b b of the furnace E, with imperforate side walls, constructed' as described, so that the lines G C can be used either separately or in conjunction lwith lues b b, to give a greater or less degree of heat, substantially as and for the purpose set forth.

-In testimony that l claim the foregoing as my own inventionI affix mysignature in presence of two witnesses.

EDWIN RAY MCDUGAL.

Witnesses:

* A. M. DE SoUoHET,

Sn). N JOHNSON. 

